The lighting was good - bright tungsten I guess. But that was under the control of Sony.. So not much I could do. Perhaps I could have put a couple of fingers over the lens to simulate worse conditions.

how about a brigade of tall, beautiful model girls to surround you (of course it'll work best for a photog is in the ant/frog - crouching position) in order to cast shadows on your target[s]? You might remember Gil Bellows in Ally Mcbeal:

sorry, wasn't able to find a larger pict.

EDIT: forgotten to ask - what lens did you use? Does a6k allow to AF wide-open and close iris to a preset position only upon full shutter press?